Yamaha XMAX YP125R - Service manual > Tightening torques

General tightening torque specifications

This chart specifies tightening torques for standard fasteners with a standard ISO thread pitch.

Tightening torque specifications for special components or assemblies are provided for each chapter of this manual. To avoid warpage, tighten multi-fastener assemblies in a crisscross pattern and progressive stages until the specified tightening torque is reached. Unless otherwise specified, tightening torque specifications require clean, dry threads. Components should be at room temperature.

1. Distance between flats
2. Outside thread diameter

Engine tightening torques

Cylinder head tightening sequence

Muffler tightening sequence

Chassis tightening torques

TIP

Lower ring nut

1. Tighten the lower ring nut 38 Nm (3.8 m*kgf, 27 ft*lbf) with a torque wrench and the steering nut wrench, and then loosen the nut 1/4 turn.

2. Tighten the lower ring nut 22 Nm (2.2 m*kgf, 16 ft*lbf) with a torque wrench and the steering nut wrench.

3. Install the rubber washer and the center ring nut.

4. Finger tighten the center ring nut, align the slots of both ring nuts, and then install the lock washer.

5. Hold the lower and center ring nuts, and then tighten the upper ring nut 75 Nm (7.5 m*kgf, 54 ft*lbf) with a torque wrench and the steering nut wrench.

TIP

Swingarm mounting bolt

1. Temporarily install the rear wheel axle nut "1".

2. Temporarily install the swingarm mounting bolt (upper side) "2", then the swingarm mounting bolt (lower side) "3".

3. Tighten the rear wheel axle nut to 135 Nm (13.5 m*kgf, 98 ft*lbf).

4. Tighten the swingarm mounting bolt (upper side), then the swingarm mounting bolt (lower side) to 28 Nm (2.8 m*kgf, 20 ft*lbf).

Swingarm tightening sequence

Lubrication points and lubricant types (YP125R)

ENGINE

Chassis

Lubrication system diagrams (YP125R)

1. Camshaft
2. Crankshaft
3. Oil pump
4. Oil filter
5. Oil strainer

Cooling system diagrams (YP125R)

1. Coolant reservoir
2. Coolant reservoir hose
3. Radiator cap
4. Radiator filler hose
5. Radiator
6. Radiator inlet hose
7. Radiator outlet hose

Cable routing (YP125R)

Battery (front view)

1. Positive battery lead
2. Meter assembly lead
3. Self-diagnosis signal lead
4. Fuse box 1
5. Air temperature sensor lead
6. Fuse box 2
7. Starter relay lead
8. Negative battery lead
9. Headlight lead
10. Wire harness
11. Lean angle sensor lead
12. Speed sensor coupler
13. Turn signal/hazard relay lead
14. Turn signal/hazard relay
15. Battery
16. Fuse box 2 lead
17. Fuse box 1 lead

1. Route the positive battery lead under the battery cover.
2. Route the meter assembly lead to the front of the starter relay.
3. Route the self-diagnosis signal lead along the negative battery lead.
4. Route the negative battery lead to the rear of the turn signal/hazard relay lead, lean angle sensor lead, and headlight lead.
5. Route the turn signal/hazard relay lead to the rear of the lean angle sensor.
6. Point the end of the plastic locking tie forward, and then cut off the excess end of the tie to 0-5 mm (0-0.20 in).
7. Point the end of the plastic locking tie upward, and then cut off the excess end of the tie to 0-5 mm (0-0.20 in).
8. Fasten the wire harness and the other leads with a plastic locking tie, making sure to align the tie with the white tape on the harness.

Front fork (front view)

1. Speed sensor lead
2. Front brake hose
3. Rectifier/regulator
4. Left front turn signal light coupler
5. Wire harness
6. Horn
7. Right front turn signal light coupler

1. Point the end of the plastic locking tie forward, and then cut off the excess end of the tie to 0-5 mm (0-0.20 in).

See also: